While basic Wi-Fi/WLAN is handy for everything, don't use it, or at least only use it when necessary!
Wi-Fi is ubiquitous these days, but that doesn't mean you should use it exclusively, whenever using Wi-Fi is possible through Ethernet, skipping the wireless connection in favor of the wired one is a better solution wherever you are can do it.
People like using Wi-Fi and that's fine most of the time, they make those trade-offs because it's also wonderfully convenient. With a large number of networked devices such as tablets, iPhones, smartphones, ... there is no other choice.
But we shouldn't compromise where it isn't necessary, as an Ethernet / LAN connection is a better choice! Because sometimes TVs just can't maintain a stable connection, and streaming media connections drop, or frequent Netflix error messages come up!
Thanks to Ethernet, you always have the best latency time and a stable connection, by switching devices from Wi-Fi to LAN, other devices that do not have a LAN also benefit by relieving the WiFi network!